package com.cartrentalsystem.interceptor;

import com.cartrentalsystem.context.BaseContext;
import com.cartrentalsystem.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Component
public class UserInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//        //判断当前拦截到的是Controller的方法还是其他资源
//        if (!(handler instanceof HandlerMethod)) {
//            //当前拦截到的不是动态方法，直接放行
//            return true;
//        }
        //放行OPTIONS请求
        String method = request.getMethod();
        if ("OPTIONS".equals(method)) {
            return true;
        }
        //1、从请求头中获取令牌
        String token = request.getHeader("Token");

        //2、校验令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JwtUtil.parseJWT("LHD", token);
            Long userId = Long.valueOf(claims.get("userId").toString());
            log.info("当前员工id：{}", userId);
            BaseContext.setCurrentId(userId);
            //3、通过，放行
            return true;
        } catch (Exception ex) {
            //4、不通过，响应401状态码
            response.setStatus(401);
            log.info("用户未登录");
            return false;
        }
    }
}
